Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af200a8c878e07a…

MALICIOUS

PDF

51.3 KB Created: 2020-08-25 07:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c1976a2af503dc0efea25b5da3047d0 SHA-1: 908360c71505ce7c4d933edfc7ad29d0e8f13774 SHA-256: 8af200a8c878e07a7d537711b1c0c8073729eaebfe353df5af308618b7d7956b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=balawat+gates+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack pattern involves luring the user to malicious infrastructure via a deceptive link.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=balawat+gates+pdf
    • http://files.kahntilesupply.com/uploads/1/3/2/3/132302907/kafisiru.pdf
    • http://files.tampagoldendoodle.com/uploads/1/3/1/3/131383358/wokuwurede-putavetatug-nakovux-lujekiwetiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/16535030357.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/powijo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/lofuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/jfc_urban_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0445/1778/5759/files/rariwisujuvurijavax.pdf
    • https://cdn.shopify.com/s/files/1/0437/8738/7037/files/25416525821.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/booster_pump_head_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0437/5317/7237/files/46167387733.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/23862242084.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d49.bin
5444218ca5db0ca99c534b3948cd4473bf965ee81c6b4e43959968a2fc8ed94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D49 4776 bytes
font_01_sfnt_off00007daa.bin
b6fddfca1c96f15e89ad38342dfdb73a9eeb26846c3a2214861a5e3df235df64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAA 10260 bytes
font_02_sfnt_off0000a0b6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B6 4324 bytes
font_03_sfnt_off0000ae79.bin
4e313c30aa86e51ebd81eda69ca84268efc7bde472bc1963bc4a547029020351		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE79 6248 bytes

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